Re: PG SQL and LIKE clause

From: Thomas Kellerer <spam_eater(at)gmx(dot)net>
To: pgsql-general <pgsql-general(at)lists(dot)postgresql(dot)org>
Subject: Re: PG SQL and LIKE clause
Date: 2019-09-13 07:16:10
Message-ID: 48e3d88a-3d17-4704-b515-c748e2cebc0a@gmx.net
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-general

Matthias Apitz schrieb am 13.09.2019 um 07:28:
> We're porting a huge Library Management System, written using all kind
> of languages one can think of (C, C++, ESQL/C, Perl, Java, ...) on Linux
> from the DBS Sybase to PG, millions of lines of code, which works also
> with DBS Oracle and in the past with INFORMIX-SE and -ONLINE.
>
> We got to know that in CHAR columns with trailing blanks a

In a nutshell: do not use the CHAR data type (neither in Oracle nor in Postgres)

Unless your application actively checks the data type name of columns in a table you can simply change the type of those columns to varchar (or text) and get rid of the annoying (but required) behaviour of the CHAR type.

To be honest, I am surprised this didn't show up in Oracle, as I think the CHAR behaviour there is the same as in Postgres.

Thomas

In response to

Browse pgsql-general by date

  From Date Subject
Next Message Ayub M 2019-09-13 07:19:41 Re: pgbouncer with ldap
Previous Message Pavel Stehule 2019-09-13 06:57:15 Re: PG SQL and LIKE clause